Question 1

Which of the following is a normal response to excessive loss of body heat in a cold environment?

Accepted Answer

A)  Dermal blood vessels constrict.
B)  Sweat glands become active.
C)  Smooth muscles relax.
D)  Dermal blood vessels dilate.E) C) and D)
F) A) and B)

Question 2

A person slams their fingers in a door. Their fingernails are damaged near the lunula, forming large white ovals at the site of the injury. As time progresses, what happens to the damaged (white) area?

Accepted Answer

A)  The white ovals will slowly dissipate and disappear as the damage is replaced from underneath via the nail bed.
B)  The white ovals will split vertically and each half will gradually move toward the lateral (horizontal) edges of the nails.
C)  The white ovals will be pushed up and out of the nail as raised bumps, with that section of nail eventually peeling off.
D)  The white ovals will gradually move upward toward the free edge of the nail and then be worn away with the free nail edge.E) All of the above
F) C) and D)

Question 3

The flexible proteins that link the cell membranes of squamous epithelial cells in skin are

Accepted Answer

A)  cadherins.
B)  collagens.
C)  cellular adhesion molecules (CAMs) .
D)  keratins.E) A) and D)
F) A) and B)

Question 4

We enjoy sunbathing because it stimulates keratinocytes to release

Accepted Answer

A)  beta endorphin.
B)  collagen.
C)  carotene.
D)  keratin.E) B) and C)
F) A) and B)

Question 5

Sebaceous glands secrete

Accepted Answer

A)  fat globules that mix with cellular debris, forming sebum.
B)  hormones.
C)  sweat in the armpits.
D)  mucus.E) A) and B)
F) B) and D)

Question 6

The ________ of the subcutaneous layer acts as a heat insulator.

Accepted Answer

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Question 7

Sweat cools the body by

Accepted Answer

A)  convection.
B)  conduction.
C)  evaporation.
D)  radiation.E) A) and B)
F) C) and D)

Question 8

Mira Dry is a cosmetic procedure where the underarm areas are microwaved. After this procedure, patients notice a drastic reduction in both the usual foul smell of body odor and wetness from regular sweating. Hair structures remain unaffected. According to these results, what structures must be damaged?

Accepted Answer

A)  Eccrine sweat glands
B)  Eccrine sweat glands and sebaceous glands
C)  Eccrine and apocrine sweat glands
D)  Sebaceous glandsE) C) and D)
F) All of the above

Question 9

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis.

Accepted Answer

A) True 
 B)False

Question 10

Corns are

Accepted Answer

A)  areas of white skin pigmentation.
B)  scaly scalp areas.
C)  keratinized conical masses on toes.
D)  growths emanating from the nostrils.E) None of the above
F) A) and B)

Question 11

The epidermis is about ________ mm thick and the dermis is about ________ mm thick.

Accepted Answer

A)  1.0 to 2.0; 0.07 to 0.12
B)  0.07 to 0.12; 1.0 to 2.0
C)  3.0 to 4.0; 5.0 to 6.0
D)  0.01 to 0.10; 0.10 to 1.0E) None of the above
F) All of the above

Question 12

Exposure to ultraviolet radiation greatly increases the risk of developing

Accepted Answer

A)  heart disease.
B)  diabetes.
C)  skin cancer.
D)  glaucoma.E) A) and C)
F) All of the above

Question 13

The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the

Accepted Answer

A)  stratum corneum.
B)  stratum granulosum.
C)  stratum spinosum.
D)  stratum basale.E) C) and D)
F) All of the above

Question 14

You step out of the shower and vigorously rub your skin with a towel. If you were able to analyze the towel, you would find skin cells. They are most likely

Accepted Answer

A)  subcutaneous layer cells.
B)  from the dermis.
C)  keratinized epidermal cells.
D)  fibroblasts.E) None of the above
F) A) and B)

Question 15

The hardness of a nail comes from

Accepted Answer

A)  carotene.
B)  collagen.
C)  calcium.
D)  keratin.E) A) and B)
F) C) and D)

Question 16

Eccrine sweat glands differ from sebaceous glands

Accepted Answer

A)  in type of secretion.
B)  in their location.
C)  in whether or not they are associated with hair follicles.
D)  all of the answer choices are correct.E) None of the above
F) A) and B)

Question 17

Botox works by blocking nerve communications and typically is used to target the muscles of the face to reduce wrinkling. However, some patients with excessive sweating (hyperhidrosis) have Botox injected into problem areas to reduce the amount of sweating. Why would this work?

Accepted Answer

A)  Nerves that directly communicate with sweat glands and stimulate them to produce sweat are blocked.
B)  The arrector pili muscle is blocked from receiving nerve signal and can't squeeze sweat from the glands.
C)  Specialized muscles controlling the sweat glands are blocked from communication.
D)  The Botox toxin directly paralyzes the sweat glands on contact.E) B) and C)
F) A) and D)

Question 18

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light.

Accepted Answer

A) True 
 B)False

Question 19

The arrector pili muscles are attached to

Accepted Answer

A)  nail beds.
B)  sebaceous glands.
C)  the hypodermis.
D)  hair follicles.E) None of the above
F) A) and D)

Question 20

Hypothermia is

Accepted Answer

A)  associated with exercising vigorously in the heat.
B)  accompanied by fever.
C)  a lowered body temperature.
D)  a form of hair loss.E) A) and B)
F) A) and C)

Exam 6: Integumentary System

The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the

Correct Answer
verified

We enjoy sunbathing because it stimulates keratinocytes to release

Correct Answer
verified

The ________ of the subcutaneous layer acts as a heat insulator.

Correct Answer
verified
adipose ti...
View Answer

Eccrine sweat glands differ from sebaceous glands

Correct Answer
verified

Botox works by blocking nerve communications and typically is used to target the muscles of the face to reduce wrinkling. However, some patients with excessive sweating (hyperhidrosis) have Botox injected into problem areas to reduce the amount of sweating. Why would this work?

Correct Answer
verified

Exposure to ultraviolet radiation greatly increases the risk of developing

Correct Answer
verified

The epidermis is about mm thick and the dermis is about mm thick.

Correct Answer
verified

You step out of the shower and vigorously rub your skin with a towel. If you were able to analyze the towel, you would find skin cells. They are most likely

Correct Answer
verified

A person slams their fingers in a door. Their fingernails are damaged near the lunula, forming large white ovals at the site of the injury. As time progresses, what happens to the damaged (white) area?

Correct Answer
verified

Sweat cools the body by

Correct Answer
verified

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis.

Correct Answer
verified

Hypothermia is

Correct Answer
verified

Correct Answer
verified

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light.

Correct Answer
verified

Which of the following is a normal response to excessive loss of body heat in a cold environment?

Correct Answer
verified

Sebaceous glands secrete

Correct Answer
verified

Corns are

Correct Answer
verified

The arrector pili muscles are attached to

Correct Answer
verified

The flexible proteins that link the cell membranes of squamous epithelial cells in skin are

Correct Answer
verified

The hardness of a nail comes from

Correct Answer
verified

Exam 6: Integumentary System

The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the

Correct AnswerverifiedShow Answer

We enjoy sunbathing because it stimulates keratinocytes to release

Correct AnswerverifiedShow Answer

The ________ of the subcutaneous layer acts as a heat insulator.

Correct Answerverifiedadipose ti...View AnswerShow Answer

Eccrine sweat glands differ from sebaceous glands

Correct AnswerverifiedShow Answer

Botox works by blocking nerve communications and typically is used to target the muscles of the face to reduce wrinkling. However, some patients with excessive sweating (hyperhidrosis) have Botox injected into problem areas to reduce the amount of sweating. Why would this work?

Correct AnswerverifiedShow Answer

Exposure to ultraviolet radiation greatly increases the risk of developing

Correct AnswerverifiedShow Answer

The epidermis is about ________ mm thick and the dermis is about ________ mm thick.

Correct AnswerverifiedShow Answer

You step out of the shower and vigorously rub your skin with a towel. If you were able to analyze the towel, you would find skin cells. They are most likely

Correct AnswerverifiedShow Answer

A person slams their fingers in a door. Their fingernails are damaged near the lunula, forming large white ovals at the site of the injury. As time progresses, what happens to the damaged (white) area?

Correct AnswerverifiedShow Answer

Sweat cools the body by

Correct AnswerverifiedShow Answer

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis.

Correct AnswerverifiedShow Answer

Hypothermia is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light.

Correct AnswerverifiedShow Answer

Which of the following is a normal response to excessive loss of body heat in a cold environment?

Correct AnswerverifiedShow Answer

Sebaceous glands secrete

Correct AnswerverifiedShow Answer

Corns are

Correct AnswerverifiedShow Answer

The arrector pili muscles are attached to

Correct AnswerverifiedShow Answer

The flexible proteins that link the cell membranes of squamous epithelial cells in skin are

Correct AnswerverifiedShow Answer

The hardness of a nail comes from

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
adipose ti...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The epidermis is about mm thick and the dermis is about mm thick.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified